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<body class="container">
    <h3 align="center">包裹的弹性布局</h3>
    <div class="d-flex bg-warning text-white mb-4 flex-wrap ">
        <div class="p-2 bg-primary">首页</div>
        <div class="p-2 bg-success">家用电器</div>
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        <div class="p-2 bg-primary">男装女装</div>
        <div class="p-2 bg-success">生鲜酒品</div>
        <div class="p-2 bg-danger">箱包钟表</div>
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    <div class="d-flex bg-warning text-white mb-4 flex-wrap-reverse">
        <div class="p-2 bg-primary">首页</div>
        <div class="p-2 bg-success">家用电器</div>
        <div class="p-2 bg-danger">办公电脑</div>
        <div class="p-2 bg-primary">男装女装</div>
        <div class="p-2 bg-success">生鲜酒品</div>
        <div class="p-2 bg-danger">箱包钟表</div>
    </div>
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</html>